// 导入 Vue 构造函数
import Vue from 'vue'
// 导入 Routr 构造函数
import Router from 'vue-router'

// 导入 八个动态路由模块
import approvalsRouter from './modules/approvals'
import attendancesRouter from './modules/attendances'
import departmentsRouter from './modules/departments'
import employeesRouter from './modules/employees'
import permissionsRouter from './modules/permissions'
import salarysRouter from './modules/salarys'
import settingsRouter from './modules/settings'
import social_securitys from './modules/social_securitys'

// 动态路由表数组(需要权限控制的)
export const asyncRoutes = [
  employeesRouter,
  departmentsRouter,
  settingsRouter,
  approvalsRouter,
  attendancesRouter,
  permissionsRouter,
  salarysRouter,
  social_securitys
]

// 注册路由插件
Vue.use(Router)

// 导入 Layout 架子 (基础结构)
import Layout from '@/layout'

/**
 * Note: sub-menu only appear when route children.length >= 1
 * Detail see: https://panjiachen.github.io/vue-element-admin-site/guide/essentials/router-and-nav.html
 *
 * hidden: true                   if set true, item will not show in the sidebar(default is false)
 * alwaysShow: true               if set true, will always show the root menu
 *                                if not set alwaysShow, when item has more than one children route,
 *                                it will becomes nested mode, otherwise not show the root menu
 * redirect: noRedirect           if set noRedirect will no redirect in the breadcrumb
 * name:'router-name'             the name is used by <keep-alive> (must set!!!)
 * meta : {
    roles: ['admin','editor']    control the page roles (you can set multiple roles)
    title: 'title'               the name show in sidebar and breadcrumb (recommend set)
    icon: 'svg-name'/'el-icon-x' the icon show in the sidebar
    breadcrumb: false            if set false, the item will hidden in breadcrumb(default is true)
    activeMenu: '/example/list'  if set path, the sidebar will highlight the path you set
  }
 */

/**
 * constantRoutes
 * a base page that does not have permission requirements
 * all roles can be accessed
 */
// 静态路由表(所以角色都可以访问的路由)
export const constantRoutes = [
  { // 登录
    path: '/login',
    component: () => import('@/views/login/index'), // 图片懒加载，优化代码，提高加载速度
    // hidden：true表示当前路由不会出现主页的左侧菜单
    hidden: true
  },

  { // 404
    path: '/404',
    component: () => import('@/views/404'),
    hidden: true
  },

  { // layout
    path: '/',
    component: Layout,
    // 重定向
    redirect: '/dashboard',
    children: [
      {
        path: 'dashboard',
        name: 'dashboard', // 必须和组件的名字保持一致
        component: () => import('@/views/dashboard/index'),
        // title:菜单名字
        // icon：菜单小图标
        meta: { title: '首页', icon: 'dashboard' }
      }
    ]
  }

  // 重定向 404
  // 404 page must be placed at the end !!!
  // { path: '*', redirect: '/404', hidden: true }
]

// todo：动态路由表(需要通过权限控制的路由)

// 创建路由实例，把 new VueRouter()写在了函数中
const createRouter = () => new Router({
  // 路由模式，默认是hash模式，可选值还有history历史模式
  // mode: 'history', // require service support
  // 当路由切换的时候，让页面回到最顶部
  scrollBehavior: () => ({ y: 0 }),
  // 临时让静态路由和动态路由表合并(当下用户可以看到所有路由表)
  // routes: [...constantRoutes, ...asyncRoutes]
  // 写死的只开放静态路由表
  routes: constantRoutes
})

// 调用创建路由实例函数，接收路由实例
const router = createRouter()

// 重置路由函数
export function resetRouter() {
  // 删除所有路由表
  const newRouter = createRouter()
  router.matcher = newRouter.matcher // reset router
}

// 导出 router 实例，提供给其他js模块用
export default router
